Lacquer Tree

Toxicodendron vernicifluum

Physical Characteristics

Toxicodendron vernicifluum is a deciduous Tree growing to 15 m (49ft) by 10 m (32ft). See above for USDA hardiness. It is hardy to UK zone 9 and is frost tender. It is in flower in July, and the seeds ripen from September to November. The species is dioecious (individual flowers are either male or female, but only one sex is to be found on any one plant so both male and female plants must be grown if seed is required). and is pollinated by Bees. The plant is not self-fertile. Suitable for: light (sandy), medium (loamy) and heavy (clay) soils and prefers well-drained soil. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils. It cannot grow in the shade. It prefers moist soil.

Distribution

E. Asia - China, Japan.

Habitats

Edible Uses

None known

Medicinal Uses

Dysentery Stimulant, tonic[178]. The leaves are used in the treatment of wasting diseases and internal parasites[218]. The seed is haemostatic and is used in the treatment of dysentery[218]. A resin from the plant is emmenagogue, haemolytic, stimulant, tonic and vermifuge[218]. Some caution is advised in the use of the leaves and stems of this plant, see the notes above on toxicity.

Known Hazards

The plant contains toxic substances that can cause severe irritation to some people[8, 19]. The sap can be particularly caustic[11]. All parts of the plant contain resinous phenolic compounds known as urushiols. Direct contacr with the plant, exposure to smoke or fumes from a burning plant or even contact with pets or animals that have touched the plant can cause severe allergic dermatitis in some individuals. There is usually a latent period of about 12 - 24 hours from the moment of contact, this is followed by a reddening and severe blistering of the skin. Even plant specimens 100 or more years old can cause problems[274].